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NB-Fi
NB-Fi Protocol is an open LPWAN protocol, which operates in unlicensed ISM radio band. Using the NB-Fi Protocol in devices allows data transmission range of up to 10 km in dense urban conditions, and up to 30 km in rural areas with up to 10 years on battery power. NB-Fi Protocol is developed by WAVIoT. Technology NB-Fi Protocol employs a Narrow Band technology that enables communication using the Industrial, Scientific and Medical ISM radio band (and in other parts of sub-GHz license-free spectrum as well). NB-Fi devices could be manufactured using widespread electronic components which could easily be manufactured or purchased in every particular country. WAVIoT has developed an NB-Fi transceiver that encapsulates the NB-Fi protocol at a physical layer. The NB-Fi transceiver supports 430–500 MHz and 860–925 MHz frequency bands at 50 to 25,600 bit/s data rates. The network is based on one-hop star topology and requires a SDR-technology base stations to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LPWAN
A low-power wide-area network (LPWAN or LPWA network) is a type of wireless telecommunication wide area network designed to allow long-range communications at a low bit rate among things (connected objects), such as sensors operated on a battery. The low power, low bit rate, and intended use distinguish this type of network from a wireless WAN that is designed to connect users or businesses, and carry more data, using more power. The LPWAN data rate ranges from 0.3 kbit/s to 50 kbit/s per channel. A LPWAN may be used to create a private wireless sensor network, but may also be a service or infrastructure offered by a third party, allowing the owners of sensors to deploy them in the field without investing in gateway technology. Attributes # Long range: The operating range of LPWAN technology varies from a few kilometers in urban areas to over 10 km in rural settings. It can also enable effective data communication in previously infeasible indoor and underground locations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISM Band
The ISM radio bands are portions of the radio spectrum reserved internationally for industrial, scientific and medical (ISM) purposes, excluding applications in telecommunications. Examples of applications for the use of radio frequency (RF) energy in these bands include radio-frequency process heating, microwave ovens, and medical diathermy machines. The powerful emissions of these devices can create electromagnetic interference and disrupt radio communication using the same frequency, so these devices are limited to certain bands of frequencies. In general, communications equipment operating in ISM bands must tolerate any interference generated by ISM applications, and users have no regulatory protection from ISM device operation in these bands. Despite the intent of the original allocations, in recent years the fastest-growing use of these bands has been for short-range, low power wireless communications systems, since these bands are often approved for such devices, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Network Topology
Network topology is the arrangement of the elements ( links, nodes, etc.) of a communication network. Network topology can be used to define or describe the arrangement of various types of telecommunication networks, including command and control radio networks, industrial fieldbusses and computer networks. Network topology is the topological structure of a network and may be depicted physically or logically. It is an application of graph theory wherein communicating devices are modeled as nodes and the connections between the devices are modeled as links or lines between the nodes. Physical topology is the placement of the various components of a network (e.g., device location and cable installation), while logical topology illustrates how data flows within a network. Distances between nodes, physical interconnections, transmission rates, or signal types may differ between two different networks, yet their logical topologies may be identical. A network’s physical topology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software-defined Radio
Software-defined radio (SDR) is a radio communication system where components that have been traditionally implemented in analog hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a personal computer or embedded system. While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which were once only theoretically possible. A basic SDR system may consist of a personal computer equipped with a sound card, or other analog-to-digital converter, preceded by some form of RF front end. Significant amounts of signal processing are handed over to the general-purpose processor, rather than being done in special-purpose hardware ( electronic circuits). Such a design produces a radio which can receive and transmit widely different radio protocols (sometimes referred to as waveforms) based solely on the software used. Software radios have s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STMicroelectronics
STMicroelectronics N.V. commonly referred as ST or STMicro is a Dutch multinational corporation and technology company of French-Italian origin headquartered in Plan-les-Ouates near Geneva, Switzerland and listed on the French stock market. ST is the largest European semiconductor contract manufacturing and design company. The company resulted from the merger of two government-owned semiconductor companies in 1987: Thomson Semiconducteurs of France and SGS Microelettronica of Italy. History ST was formed in 1987 by the merger of two government-owned semiconductor companies: Italian SGS Microelettronica (where SGS stands for ''Società Generale Semiconduttori'', "Semiconductors' General Company"), and French Thomson Semiconducteurs, the semiconductor arm of Thomson. SGS Microelettronica originated in 1972 from a previous merger of two companies: * ATES (Aquila Tubi e Semiconduttori), a vacuum tube and semiconductor maker headquartered in L'Aquila, the regional capital of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ON Semiconductor
onsemi (stylized in lowercase; legally ON Semiconductor Corporation; formerly ON Semiconductor until August 5, 2021) is an American semiconductor supplier company, based in Phoenix, Arizona and ranked #483 on the 2022 ''Fortune'' 500 based on its 2021 sales. Products include power and signal management, logic, discrete, and custom devices for automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power applications. onsemi runs a network of manufacturing facilities, sales offices and design centers in North America, Europe, and the Asia Pacific regions. Based on its 2016 revenues of $3.907 billion, onsemi ranked among the worldwide top 20 semiconductor sales leaders. History onsemi was founded in 1999. The company was originally a spinoff of Motorola's Semiconductor Components Group. It continues to manufacture Motorola's discrete, standard analog, and standard logic devices. In February 2022, it was announced that BelGaN ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
